Earth's Mass Extinction

Explore the intriguing theory behind Earth's mass extinctions in this thought-provoking TED-Ed talk by Peter Ward, author of the "Medea Hypothesis." Discover why asteroid strikes may not be the primary cause of these catastrophic events and learn about the potential role of bacteria in producing hydrogen sulfide, a deadly poison. Delve into Ward's compelling arguments and understand how this seemingly destructive compound might have surprising applications in the field of medicine. Gain a fresh perspective on the complex interplay between microbial life and global extinctions in this 20-minute presentation that challenges conventional wisdom about Earth's history.